<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>分区元素</title>
</head>
<body>
最近的天气很<span style="color:red;">热</span>，
但是今晚有<span style="color:blue;">暴雨</span>预警
<div></div>
<div>我是内容</div>
<hr>
<div class="header">头部</div>
<div class="main">主体内容</div>
<div class="aside">侧边栏</div>
<div class="nav">导航栏</div>
<div class="section">区块章节</div>
<div class="footer">页尾</div>
<div class="article">文章</div>
<hr>
<header>头部</header>
<main>主体内容</main>
<aside>侧边栏</aside>
<nav>导航栏</nav>
<section>区块章节</section>
<footer>尾页</footer>
<article>文章</article>
</body>
</html>